<template>
    <!-- 头部区域 -->
    <el-container class="home-container">
        <el-header>
            <div>
            <img src="../assets/heima.png" alt="">
            <span>电商后台管理系统</span>
        </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
        <el-aside :width="isCollapse? '64px':'200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
         <!-- 侧边栏菜单区 -->
    <el-menu
      background-color="#545c64"
      text-color="#fff"
      active-text-color="#ffd04b" unique-opened :collapse="isCollapse" :collapse-transition	= false router :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id.toString() " v-for="item in menulist" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
        <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
        <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>


        <!-- 二级菜单 -->
        <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
            <!-- 图标 -->
            <i class="el-icon-location"></i>
            <span>{{subItem.authName}}</span>
        </el-menu-item>
     </el-submenu>
    </el-menu>

        </el-aside>
        <!-- 侧边栏主体 -->
        <el-main><router-view></router-view></el-main>
    </el-container>
</el-container>
</template>

<script>
export default {
    data(){
        return{
            //左侧菜单数据
            menulist:[],
            iconsObj:{
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'

            },
            isCollapse:false,
            //被激活的地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push("/login");
        },
        //获取所有的菜单
        async getMenuList(){
           const{data:res} = await this.$http.get('menus')
           if(res.meta.status != 200 ) return this.$message.error(res.meta.msg)
           this.menulist = res.data
           console.log(res)
        },
        //点击按钮，切换菜单的折叠展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        //绑定链接的激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color:#373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0%;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left:15px;
        }
    }
}

.el-aside{
    background-color:#373d41;
    .el-menu{
        border-right: none ;
    }
}

.el-main{
    background-color:#fff;
}
.iconfont{
    margin-right: 10px;
}

.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>